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(No Model.)` .3 sheets-sheet 1.

C. H. MORGAN.

DUST COLLEGTOR. 'I No. 333,020. Patented Dec.' 22, 1885.

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DUST COLLECTOR.

3. Sheets--Sheet 3.

(No Model.)

`G. H.M0RGAN.

DUST COLLECTOR.

No. 333,020. y Pavtented Dec. 22.1885.

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UNITED STATES PATENT OFFICE.

`oHARLEs H. MORGAN, OF BUFFALO, NRW YORK.

DUST-#CQ LLECTOR.

SPECIFICATION forming part' of Letters Patent No. 333,020l dated December 22,1885.

' .Application filed May 2l, 1885. Serial No. 166,*285. (No model.)

To all whom it may concern: v

Be it known that I, CHARLES H. MORGAN, of the city of Buffalo, in the county of Erie and State of New York, have invented new and useful Improvements in Dust-Collectors, of which the following is a specification.

This invention relates to an improvement in that class of machines which are employed in mills, factories, and other industrial establishments for separating the dust from the air,

drawn from millstones, middlingspuriers, grain-cleaners, and other machines, by lter-v ing the dust-laden air through bags of flannel or other cloth.

The object of my invention is to provide means for thoroughly detaching the accumulated dust from the filtering-bags at suitable intervals, the duration of which can'be easily regulated as may be necessary in accordance with the character of the material operated upon.

My invention consists of the improvements which will be hereinafter fully set forth, and pointed out in the claims.

In the accompanying drawings,consisting of three sheets, Figure l is a longitudinal elevation of my improved dust-collector. Fig. 2 is a top plan View of the same. Fig. 3 is a vertical cross-section of the machine. Fig. 4. is a sectional elevation of the mechanism which supports the upper end of the filterbag. Fig. 5 is a longitudinal vertical section of the lower portion of the machine. Fig. 6 is a side elevation of the mechanism whereby the bag is jarred while being raised. Fig. 7 is a side elevation of the lifting-wheel on an enlarged scale. Fig. 8 is a vertical section of the same. Fig. 9 is a side elevation of the valve-actuating mechanism. Fig. 10 isa vertical section of a modified construction of the bag. Fig. 1l is a top plan view of the same.

Like letters of reference refer to like parts in the several figures.

.. A represents the stationary frame of the 'machine, and A is a series of hopper-shaped receptacles, made open at the top and arranged lengthwise in the lower portion of the frame A.

B represents the blast spout or trunk through which the dust-laden air-current is delivered tothe machine, and which is arranged lengthsecured tightly with their lower ends to the open upper ends of the hoppers A', so as to form upward continuations of said hoppers and receive the dustladen air which is blown into said hoppers from the air-trunk B. The upper end of each bag is secured to a plate, cl,

which is capable of a vertical movement, so

that by lowering the plate the bag is collapsed and reversed, while by raising the plate to its normal position (represented in Fig. 3) thebag is distended.

d are vertical guide-rods secured with their upper ends to the frame A,and passing through the plate (l and depending into each bag, for guiding the plate d in its vertical movements.

E represents a stop and lifting plate or crosshead suspended within the bag by a chain, e, and serving to arrest the fall of the plate d and to return it to its elevated position. This plate E is preferably guided on the rods d', like the plate d.

e is a spring or elastic cushion secured to the upper side of the plate E, to receive the impact of the falling plate d.

f represents a horizontal shaft arranged lengthwise on the front side of the machine, and supported in bearings f', secured to the frame A.

F represents chain-wheels mounted loosely on the shaft f opposite each bag D, and carrying the lifting-chains e, the fixed ends of which are attached to V-shaped bars f 2, which are fastened to the main frame.'

G represents weights provided with pulleys g, which rest on the chains e, in the bights thereof.

H represents a carrier secured t0 the shaft f on one side of each wheel F by a set-screw or other adjustable device, and provided with a spring-pawl, h, which engages with a ratchetwheel, h', secured to or formed on the side IOO of each wheel F, so that the rotation of the shaftf in the direction of the arrow in Fig. 3 will be transmitted to the wheels F by the pawls It and ratchet-wheels h in such manner as to turn the wheels F in the same direction so long as the pawls are engaged with said ratchets.

I represents stationary circular frames arranged concentric with the wheels F on the sides on which the pawls h are arranged, and provided with arms fi, whereby these frames are secured to the upper portion of the main frame.

t" represents a stoppin secured to the side of each frame I, in such a position as to strike against the tail of the pawl h as the latter ro tates with the shaft f, thereby' disengaging the pawl h from the ratchet-wheel h' ofthe wheel F, and permitting the latter to be turned by the weight G drawing down the chain e,where by the plate E at the opposite end of the chain is raised. The pin t" holds the pawl h out of engagement sufficient] y long to permit the weight to run down. Vhen the pawl h clears the pin i', the pawl again engages with the ratchet-wheel It', whereby thel wheel F is again connected with the shaft and turned so as to elevate the weight and lower the plate E until the pawl is again tripped.

In ord er to prevent the chains from slipping on the wheels F, the latter are preferably provided with sprockets which engage with the links of the chains.

Theratchet-wheel h is provided with a single notch, so that the pawl h remains out of engagement with the ratchet-wheel until the pawl in rotating with the shaft again reaches the notch. Thewheel F is thereby turned to lift the weight G during a part only of the revolution ofthe shaftf, and this lifting movement conti n ues until the pawl is tripped by the stop rIhe weight then runs down until the plate E, in lifting the plate CZ by the spring e', is arrested by the plate UZ striking against the upper portion of the frame A.

By changing the position of the stoppin t" on the frame I, which latter is provided with a number of holes for the purpose, the lifting fmovement of the wheel F can be shortened or lengtheueti, thereby shortening or lengthen ing the drop movement of the bag likewise. The lifting movement can be similarly shortened by inserting a number of stoppins, t", in the frame I, so that the pawl is tripped a number of times during each revolution of the shaft. In this case the ratchet-wheel h is constructed with numerous teeth, like an ordinary ratchetwheel, and the number of in ways k', secured to the upper portion of the main frame, and pivoted to rock-arms K, which are secured to horizontal transverse shafts 7a2-one for each plate d.

Z is an arm secured to the outer end of each shaft k2, and provided with a curved end against which engages a pin, Z, secured to the wheel F in such manner that the arm Z is thereby lifted and the shaft lo" turned to Withdraw the bolts k from the bolts j, whereby the upper end of the bag isvreleased. The pin Z s so arranged on the wheel F with reference to the pin t" on the frame I that the pin Z first operates upon the armZ and releases the upper end of the bag, and that after a sufficient length of time has elapsed to permit the bag to drop and the dust to be discharged the pawl h engages the pin z" and disconnects the wheel F from the shaft,where by the weight G is permitted to descend, and the upper end of the bag is elevated. The locking bolts 7c are thrown into engagement with the boltsj by the overhanging weight of the arm Z.

m m are pins or projections secured to the same sides of the wheels F on which the pins Z are arranged, but made shorter than the pins Z', so as not to come in contact Withthe arms Z.

M is a jarring-lever pivoted to the `upper portion ofthe main fra1ne,near each wheel F, and having its lower end arranged in prox imity to the pins m, so as to be oscillated by the latter as the wheel revolves in raising the weight G. lIhe upper end of the lever M is provided with a roller, m', which bears on the chain e and jars the latter as the lever-oscillates, thereby jerking or jarring the bag as it is raised by the chain.

The slides b c2 in' each hopper A are secured together or made in one piece, so as to move simultaneously, and are operated by arms n, which are secured to a horiionta-l shaft, n, arranged in each hopper A.

o is an arm secured to the end of each shaft n', and o is a rod extending upwardly from the arm o to a lever, P, pivoted to the upper portion of the main frame. The levers P-are actuatedby cams p, secured to the shaft f.

The valve mechanism, as well as the mechanism whereby the bag is dropped and lifted,

are so timed on each bag with reference to the other bags that only one bag is disconnected from the blast-spout B and cleaned at a time,

while all the other bags remain in communi` cation with the air-spout.

In disconnecting and cleaning one of -the filter-bags thelcam p first moves the slides bti so as to close the opening 4b and open the ap- A from `the dust-spout B and connecting it with the conveyer-trough c. The pin Zon the wheel F, rotating with the shaft f, next strikes the arm Z, thereby withdrawing the locking-bolts 7c and permitting the plate d to drop on the rods d until arrested by the spring IOO IIO

`erture c', thereby disconnecting the hopper e. of the cross-head E. This collapsing inovel which is dropped to detach the dust from the ment of the bag is comparatively slow, owing to the resistance of the air contained in the bag,which air is forced through the ltencloth. In collapsing, the bag is partially or wholly reversed, according to the distance through which 'the bag is permitted to fall before being arrested by the plate E. During this collapsing movement of the bag the bulk of the dust adhering to the inner side of the bag is shaken off and carried down into the hopper Af and conducted by the latter to the conveyer C. The pawl h is next tripped by striking the pin z" on the frame I, whereby the wheel F is disconnected from the shaft f, causing the weight G to run down. the'upper end of the bag very rapidly, and during this upward movement of the bag the chain e is jarred by the lever M, whereby the remaining dust is detached from 'the bag. By this rapid distending movement of the bag a strong partial vacuum is created within the same, whereby the external air is caused to iiow from outside into the bag through the lter-cloth, which air-current materially aids in detaching the dust from the bag. When the bag has been distended, the bolts j engage with the locking-bolts k, whereby the upper end of the bag is supported. The cam p has remained inv engagement with the lever P during these movements, and now releases the lever P, and the slides are returned to their former position by gravity, opening the communication between the dust-spout B and the hopper A and closing the opening c of the conveyer-trough. When the pawl next engages with the ratchet-wheel h', the wheel F is turned in the direction of the arrow in Fig. 3, thereby raising the weight G and lowering the plate E in the bag until the pawl is again tripped. Y

The capacity of the bags which remain in communication with the blast-spout is easily made sufficiently large to prevent back-pressure on the fan of the middlings-purier or other machine from which the dust laden air is discharged.

In the modified construction represented in Figs. 10 and ll, the bag D is provided with an inner auxiliary bag, D', to increase the filtering-surface. The inner bag, lD', is secured with its lower narrow end to a plate or bridge, q, which is attached to the hopper A, and with its upper wide end to the plate d, which latter is constructed, in this case, in the form of an open frame having openings for the escape of the air which filters through the inner bag, D.

I claim as my inventionl. In a dustcollector, the combination, with the air-spout, of a dust-receptacle connected therewith by an aperture, a valve applied to said aperture and opened and closed automatically, and a filter-bag having its lower end rigidly secured and communicating with said.`

dust-receptacle, and having a free upper end This elevates the plate E and bag and deliver it into the dustreceptacle, substantially as set forth. y

2. yIn adust-collector, the combination, with the air -spout, a dustreceptacle connected therewith, and a valve which is automatically opened and closed to openfand break the c0mmunication between the dust-receptacle and the air-spout,'of a filter-bag having its lower end rigidly secured and communicating with said dust-receptacle, and a free upper end which is dropped to detach the dust from the bag, a stop whereby the fall of the upper end ofthe bag is arrested, and a lifter whereby the upper end of the bag is returned to its elevated position, substantially as set forth.

3. In a dustcollector, the combination, with the air-spout and dust-receptacle, of a filterbag having its lower end rigidly secured and communicating with said dust-receptacle, and a free upper end capable of being dropped, and an automatic locking device whereby the upper end of the bag is alternately supported and released, substantially as set forth.

4. In a dust-collector, the combination, with the air-spout and dustreceptacle, of a lterbag having its lower end rigidly secured and a free upper end capable of being dropped, a stop whereby the fall of the upper end of the bag is arrested, a lifter whereby the upper end of the bag is returned to its elevated position, and an automatic locking device whereby the upper end of the bag is supported, substantially as set forth.

5. The combination, with the filter-bag D, air-spout B, dust-receptacle A', and conveyer c C, of the valves b c2, which are moved simultaneously, and whereby the .communica-l tion of the dust-receptacle with the airespout is opened when its communication with the conveyer is closed, and vice versa, substan tially as setforth.

6. The combination, with the dust-receptacle A and the filter-bag D, provided at its free upper end with a plate, d, of the suspended stop E and the lilting mechanism connected therewith, substantially as set forth.

7. |Ihe combination, with the stationary frame A, dustreceptacle A', and the filter-bag D,provided at its free upper end with a plate, d, of the guide-rods d and the suspended stopplate E, substantially as set forth.

IOO

IIO

s. The combination, with the dust-receptacle A' and the filter-bag D, of the stop E,

attached to a chain, e, the rotating shaft f, the chain-wheel F, which is alternately connected with and disconnected from said shaft,and the Weight G, applied to said chain, substantially as set forth.

10. The combination, with the dust-receptacle A and filter-bag D, of the stop E, attached to a chain. e, the rotating shaftf, provided with a carrier, H, having a pawl, h, the chain-wheel F, having a ratchet-wheel, h', a stop, i', whereby the pawl is thrown out of engagement, and the weight G, applied to the chain, substantially as set forth.

11. The combination, with the main frame A, the dust-recentacle A', and filter-,bag D, of the stop E, attached to a chain, e, the rotating shaft f, provided with a carrier, H, havinga pawl, l1. the chainAwheel F, having a ratchetwheel, h', a Stationary frame, I, having a stop, i', made adjustable on said frame, and the Weight G, applied to the chain, substantially as set forth.

12. The combination, with the main frame A and the lter-bag D, provided at its upper end with a plate, d, carrying a notched bolt, j, of an automatic locking-bolt, 7c, which is j moved to secure and release the upper end of the bag, substantially as Set forth.

13. The combination, with the main frame A and the filter-bag D, of the stop E,attached to the chain e, a chain-Wheel, F, whereby the stop E and the upper end of the bag 'are raised, and a jarring-lever, M, bearing upon the chain e, substantially as set forth.

14. The combination, with the main frame A, dust-receptacle A', air-spout B, conveyer c C, and filter-bag D, of the slides b c", actuating-lever P, connected with said slides, rotating shaftf, and a cam, p,whereby the lever P is moved, substantially as setforth.

15. In a dustcollector, the combination, with the air-spout and dust-receptacle vprovided With a discharge-opening, of a filter-bag having one end rigidly secured and the other end movable, and a valve whereby the dustdischarge opening is automatically opened and closed, substantially as set forth.

Witness my hand this 9th day of May, 1885.

oHARLns H. MORGAN.

Witnesses: I

JNO. J. BONNER, GHAs. J. BUoHHEiT. 

